Research In Motion is reporting that there is a "critical severity outage" of E-mail service on BlackBerry smartphones across North America, however, the cause of the outage, or how widespread it is, has not yet been reported.

According to a Reuters Canada report, BlackBerry users today received an emergency notification email “regarding the current BlackBerry Infrastructure outage.” An AP report says the outage occurred sometime shortly after 3:30 p.m..

The e-mail notification said the outage has affected enterprise clients and "users of the Americas network." Neither the Reuters Canada report or the AP report says how many users in the U.S. and Canada are affected.

TMCnet has been searching the Web for more news on what caused the outage and how long it will take to repair. We’ll let you know as soon as we know …

Geez, first it was the undersea cables and now BlackBerry email service. Wonder how many conspiracy theories are forming around this one ...